Thermally stabilized polyester-polyether block copolymer composi

Details Thermally stabilized polyester-polyether block copolymer composi Thermally stabilized polyester-polyether block copolymer composi

1974-12-31

1977-03-22

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4585B, 260 4595A, 260 459QA, 260 459NC, 260 459NN, 260 457P, 260 4585S, C08J 320

Patent

active

040136183

ABSTRACT:
A polyester-polyether block copolymer composition being very stable even in the presence of heavy metals, which comprises a polyester-polyether block copolymer consisting of segments of polyester units and segments of polyether units; at least one compound containing the group of the following formula: ##STR1## wherein X is oxygen or sulfur, R.sub.1, R.sub.2 and R.sub.3 are each hydrogen or an organic residue, or R.sub.2 and R.sub.3 forms a Schiff's base with the adjacent nitrogen, and R.sub.4 and R.sub.5 are each hydrogen or an organic residue; at least one radical scavenger and/or at least one peroxide decomposer.

REFERENCES:
patent: 3357944 (1967-12-01), Dexter
patent: 3440210 (1969-04-01), Blorent et al.
patent: 3734884 (1973-05-01), Dunnenberger et al.
patent: 3734885 (1973-05-01), Muller et al.
patent: 3806358 (1974-04-01), Glander et al.
patent: 3856749 (1974-12-01), Hoeschele

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